Being against a particular "scene", or youth subculture, such as straightedge or emo, because you are closeminded.
Sceneism against the emo scene is very common, or is at least more publicized.
It's a new form of racism, except everyone's white, listens to music that is different from another scene, and dresses differently.
Note: Sceneism, or the scene card, cannot be claimed by posers belonging to one scene. You know who you are.
Sceneism is why people call me a gothtard.